[DNX#2006040142000704] [U-Boot-Users] Re: [PATCH] Make System IO Config R [...]

[DENX Support System]

Hello list,

inside the automatic U-Boot patch tracking system a new ticket
[DNX#2006040142000704] was created:

<snip>
> Wolfgang.
> 
> That is very  convincing. So for the special case of setting RCW to boot
> 
> from lowmem vector, all is well.  And I guess there is no great harm in 
> that restriction.
> 
> When RCW set to boot from himem vector though, the 83xx maps in the 
> _last_ 8M of the flash chip, not the first, so the remap_flash_by_law* 
> routines end up mapping u-boot out from under us.  But OK; we just won't
> 
> do that then.
> 
> I still stand by by compaint though: if you're going to remap flash 
> according to CFG_FLASH_BASE in start.S,  then the 8M hardcoded size is 
> annoying.
> 
> >>back to LAW0 on a builtin assumption of 8M size, placing the starting 
> >>address thereof to the CFG_FLASH_BASE location (in their case, 
> >>0xfe00_0000); then do jumping arithmetic based on that value and TEXT_BASE.
> >>
> >>Which works in the Freescale-ADS case, as they have an 8M flash chip.
> > 
> > 
> > It also works in case of the TQM8349 board, which uses 32 MB:
> > 
> > U-Boot 1.1.4 (Nov 17 2005 - 00:14:36) MPC83XX
> > 
> > Clock configuration:
> >   Coherent System Bus:  266 MHz
> >   Core:                 533 MHz
> >   Local Bus:             33 MHz
> > CPU:   MPC83xx, Rev: 1.1 at 533.328 MHz
> > Board: TQM834x
> > PCI1:  32 bit, 33 MHz
> > I2C:   ready
> > DTT:   1 is 28 C
> > DRAM:  256 MB
> > FLASH: 32 MB
> > PCI:   Bus Dev VenId DevId Class Int
> > In:    serial
> > Out:   serial
> > Err:   serial
> > Net:   TSEC0, TSEC1
> > 
> > Type "run flash_nfs" to mount root filesystem over NFS
> > 
> > Hit any key to stop autoboot:  0 
> > => fli
> > 
> > Bank # 1: CFI conformant FLASH (32 x 16)  Size: 32 MB in 256 Sectors
> >  Erase timeout 16384 ms, write timeout 0 ms, buffer write timeout 4096 ms, buffer size 32
> >   Sector Start Addresses:
> >     80000000 (RO) 80020000 (RO) 80040000 (RO) 80060000      80080000     
> >     800A0000      800C0000      800E0000      80100000      80120000     
> >     80140000      80160000      80180000      801A0000      801C0000     
> > ...
> > 
> > Best regards,
> > 
> > Wolfgang Denk
> > 
</snip>

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